[PATCH v2 3/5] scsi: ufs: add ufshcd_is_auto_hibern8_enabled facility
From: Stanley Chu <hidden>
Date: 2020-01-24 15:07:56
Also in:
linux-mediatek, linux-scsi, lkml
Subsystem:
scsi subsystem, the rest · Maintainers:
"James E.J. Bottomley", "Martin K. Petersen", Linus Torvalds
Auto-Hibern8 may be disabled by some vendors or sysfs in runtime even if Auto-Hibern8 capability is supported by host. Thus provide a way to detect if Auto-Hibern8 is actually enabled for future related handlings. Signed-off-by: Stanley Chu <redacted> --- drivers/scsi/ufs/ufshcd.h | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 2ae6c7c8528c..81c71a3e3474 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h@@ -55,6 +55,7 @@ #include <linux/clk.h> #include <linux/completion.h> #include <linux/regulator/consumer.h> +#include <linux/bitfield.h> #include "unipro.h" #include <asm/irq.h>
@@ -773,6 +774,11 @@ static inline bool ufshcd_is_auto_hibern8_supported(struct ufs_hba *hba) return (hba->capabilities & MASK_AUTO_HIBERN8_SUPPORT); } +static inline bool ufshcd_is_auto_hibern8_enabled(struct ufs_hba *hba) +{ + return FIELD_GET(UFSHCI_AHIBERN8_TIMER_MASK, hba->ahit) ? true : false; +} + #define ufshcd_writel(hba, val, reg) \ writel((val), (hba)->mmio_base + (reg)) #define ufshcd_readl(hba, reg) \
--
2.18.0
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